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Released 1994-06-13 | ||
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CONTENTS: | ||
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1. Introduction. | ||
2. License. | ||
3. Files in this release. | ||
4. Installation. | ||
5. Problems and tuning. | ||
6. Using the drivers with earlier releases. | ||
7. Acknowledgments. | ||
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1. INTRODUCTION. | ||
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This is a set of Ethernet drivers for the D-Link DE-600/DE-620 | ||
pocket adapters, for the parallel port on a Linux based machine. | ||
Some adapter "clones" will also work. Xircom is _not_ a clone... | ||
These drivers _can_ be used as loadable modules, | ||
and were developed for use on Linux 1.1.13 and above. | ||
For use on Linux 1.0.X, or earlier releases, see below. | ||
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I have used these drivers for NFS, ftp, telnet and X-clients on | ||
remote machines. Transmissions with ftp seems to work as | ||
good as can be expected (i.e. > 80k bytes/sec) from a | ||
parallel port...:-) Receive speeds will be about 60-80% of this. | ||
Depending on your machine, somewhat higher speeds can be achieved. | ||
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All comments/fixes to Bjorn Ekwall (bj0rn@blox.se). | ||
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2. LICENSE. | ||
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This program is free software; you can redistribute it | ||
and/or modify it under the terms of the GNU General Public | ||
License as published by the Free Software Foundation; either | ||
version 2, or (at your option) any later version. | ||
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This program is distributed in the hope that it will be | ||
useful, but WITHOUT ANY WARRANTY; without even the implied | ||
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR | ||
PURPOSE. See the GNU General Public License for more | ||
details. | ||
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You should have received a copy of the GNU General Public | ||
License along with this program; if not, write to the Free | ||
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA | ||
02139, USA. | ||
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3. FILES IN THIS RELEASE. | ||
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README.DLINK This file. | ||
de600.c The Source (may it be with You :-) for the DE-600 | ||
de620.c ditto for the DE-620 | ||
de620.h Macros for de620.c | ||
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If you are upgrading from the d-link tar release, there will | ||
also be a "dlink-patches" file that will patch Linux 1.1.18: | ||
linux/drivers/net/Makefile | ||
linux/drivers/net/CONFIG | ||
linux/drivers/net/MODULES | ||
linux/drivers/net/Space.c | ||
linux/config.in | ||
Apply the patch by: | ||
"cd /usr/src; patch -p0 < linux/drivers/net/dlink-patches" | ||
The old source, "linux/drivers/net/d_link.c", can be removed. | ||
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4. INSTALLATION. | ||
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o Get the latest net binaries, according to current net.wisdom. | ||
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o Read the NET-2 and Ethernet HOWTOs and modify your setup. | ||
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o If your parallel port has a strange address or irq, | ||
modify "linux/drivers/net/CONFIG" accordingly, or adjust | ||
the parameters in the "tuning" section in the sources. | ||
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If you are going to use the drivers as loadable modules, do _not_ | ||
enable them while doing "make config", but instead make sure that | ||
the drivers are included in "linux/drivers/net/MODULES". | ||
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If you are _not_ going to use the driver(s) as loadable modules, | ||
but instead have them included in the kernel, remember to enable | ||
the drivers while doing "make config". | ||
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o To include networking and DE600/DE620 support in your kernel: | ||
# cd /linux | ||
(as modules:) | ||
# make config (answer yes on CONFIG_NET and CONFIG_INET) | ||
(else included in the kernel:) | ||
# make config (answer yes on CONFIG _NET, _INET and _DE600 or _DE620) | ||
# make clean | ||
# make zImage (or whatever magic you usually do) | ||
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o I use lilo to boot multiple kernels, so that I at least | ||
can have one working kernel :-). If you do too, append | ||
these lines to /etc/lilo/config: | ||
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image = /linux/zImage | ||
label = newlinux | ||
root = /dev/hda2 (or whatever YOU have...) | ||
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# /etc/lilo/install | ||
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o Do "sync" and reboot the new kernel with a D-Link | ||
DE-600/DE-620 pocket adapter connected. | ||
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o The adapter can be configured with ifconfig eth? | ||
where the actual number is decided by the kernel | ||
when the drivers are initialized. | ||
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5. "PROBLEMS" AND TUNING, | ||
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o If you see error messages from the driver, and if the traffic | ||
stops on the adapter, try to do "ifconfig" and "route" once | ||
more, just as in "rc.inet1". This should take care of most | ||
problems, including effects from power loss, or adapters that | ||
aren't connected to the printer port in some way or another. | ||
You can somewhat change the behaviour by enabling/disabling | ||
the macro SHUTDOWN_WHEN_LOST in the "tuning" section. | ||
For the DE-600 there is another macro, CHECK_LOST_DE600, | ||
that you might want to read about in the "tuning" section. | ||
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o Some machines have trouble handling the parallel port and | ||
the adapter at high speed. If you experience problems: | ||
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DE-600: | ||
- The adapter is not recognized at boot, i.e. an Ethernet | ||
address of 00:80:c8:... is not shown, try to add another | ||
"; SLOW_DOWN_IO" | ||
at DE600_SLOW_DOWN in the "tuning" section. As a last resort, | ||
uncomment: "#define REALLY_SLOW_IO" (see <asm/io.h> for hints). | ||
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- You experience "timeout" messages: first try to add another | ||
"; SLOW_DOWN_IO" | ||
at DE600_SLOW_DOWN in the "tuning" section, _then_ try to | ||
increase the value (original value: 5) at | ||
"if (tickssofar < 5)" near line 422. | ||
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DE-620: | ||
- Your parallel port might be "sluggish". To cater for | ||
this, there are the macros LOWSPEED and READ_DELAY/WRITE_DELAY | ||
in the "tuning" section. Your first step should be to enable | ||
LOWSPEED, and after that you can "tune" the XXX_DELAY values. | ||
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o If the adapter _is_ recognized at boot but you get messages | ||
about "Network Unreachable", then the problem is probably | ||
_not_ with the driver. Check your net configuration instead | ||
(ifconfig and route) in "rc.inet1". | ||
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o There is some rudimentary support for debugging, look at | ||
the source. Use "-DDE600_DEBUG=3" or "-DDE620_DEBUG=3" | ||
when compiling, or include it in "linux/drivers/net/CONFIG". | ||
IF YOU HAVE PROBLEMS YOU CAN'T SOLVE: PLEASE COMPILE THE DRIVER | ||
WITH DEBUGGING ENABLED, AND SEND ME THE RESULTING OUTPUT! | ||
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6. USING THE DRIVERS WITH EARLIER RELEASES. | ||
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The later 1.1.X releases of the Linux kernel include some | ||
changes in the networking layer (a.k.a. NET3). This affects | ||
these drivers in a few places. The hints that follow are | ||
_not_ tested by me, since I don't have the disk space to keep | ||
all releases on-line. | ||
Known needed changes to date: | ||
- release patchfile: some patches will fail, but they should | ||
be easy to apply "by hand", since they are trivial. | ||
(Space.c: d_link_init() is now called de600_probe()) | ||
- de600.c: change "mark_bh(NET_BH)" to "mark_bh(INET_BH)". | ||
- de620.c: (maybe) change the code around "netif_rx(skb);" to be | ||
similar to the code around "dev_rint(...)" in de600.c | ||
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7. ACKNOWLEDGMENTS. | ||
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These drivers wouldn't have been done without the base | ||
(and support) from Ross Biro, and D-Link Systems Inc. | ||
The driver relies upon GPL-ed source from D-Link Systems Inc. | ||
and from Russel Nelson at Crynwr Software <nelson@crynwr.com>. | ||
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Additional input also from: | ||
Donald Becker <becker@super.org>, Alan Cox <A.Cox@swansea.ac.uk> | ||
and Fred N. van Kempen <waltje@uWalt.NL.Mugnet.ORG> | ||
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DE-600 alpha release primary victim^H^H^H^H^H^Htester: | ||
- Erik Proper <erikp@cs.kun.nl>. | ||
Good input also from several users, most notably | ||
- Mark Burton <markb@ordern.demon.co.uk>. | ||
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DE-620 alpha release victims^H^H^H^H^H^H^Htesters: | ||
- J. Joshua Kopper <kopper@rtsg.mot.com> | ||
- Olav Kvittem <Olav.Kvittem@uninett.no> | ||
- Germano Caronni <caronni@nessie.cs.id.ethz.ch> | ||
- Jeremy Fitzhardinge <jeremy@suite.sw.oz.au> | ||
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Happy hacking! | ||
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Bjorn Ekwall == bj0rn@blox.se |
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